Medical term describing that the potassium level in the blood is lower than normal.

•ECG criteria:

•T wave flattening or T wave inversion.

•U waves.

•QRS widening.

QT interval prolongation.

•Arrhythmias (supraventricular tachycardia, atrial flutter, atrial fibrillation, ventricular tachycardia, ventricular flutter, ventricular fibrillation and torsades de pointes).

•Atrioventricular blocks.

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